sensors Mode-S transponder

4CC52C

ICAO 24-bit transponder address

Currently assigned to TF-ICN · BOEING 737 MAX 8

Hex
4CC52C
Octal
23142454
Decimal
5,031,212
Tail
TF-ICN
Type
B38M
No current signal · last broadcast 13h ago
Flights observed
9
Distinct callsigns
6
Country
-
Last broadcast
13h ago

Last known position

Most recent position reported by Mode-S 4CC52C.

Callsign history 6 distinct

Callsign Airline Flights Last seen
ICE681 Icelandair 2 2026-04-13
ICE14T - 2 2026-04-13
ICE12E - 2 2026-04-14
ICE98C - 1 2026-04-14
ICE216 - 1 2026-04-12
ICE15M - 1 2026-04-13

Recent flights last 9

DateFlightRouteTakeoffLandingDuration
2026-04-14 ICE98C - Apr 14, 10:55 UTCApr 14, 11:05 UTC10m
2026-04-14 ICE12E - Apr 14, 09:10 UTCApr 14, 09:30 UTC20m
2026-04-14 ICE12E - Apr 14, 05:30 UTCApr 14, 05:45 UTC15m
2026-04-13 ICE681 KEF → SEA Apr 13, 19:50 UTCApr 13, 23:45 UTC3h 55m
2026-04-13 ICE681 KEF → SEA Apr 13, 17:25 UTCApr 13, 20:10 UTC2h 45m
2026-04-13 ICE15M BER → KEF Apr 13, 12:30 UTCApr 13, 15:35 UTC3h 5m
2026-04-13 ICE14T - Apr 13, 08:20 UTCApr 13, 11:15 UTC2h 55m
2026-04-13 ICE14T - Apr 13, 07:55 UTCApr 13, 08:15 UTC20m
2026-04-12 ICE216 - Apr 12, 18:10 UTCApr 12, 19:35 UTC1h 25m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the TF-ICN page for operator, model, and routing details .

Mode-S 4CC52C frequently asked

What is Mode-S code 4CC52C?
4CC52C is an ICAO 24-bit transponder address. Assigned to TF-ICN.
Is 4CC52C broadcasting right now?
No active broadcast right now. Last signal was 13h ago.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex 4CC52C, octal 23142454, decimal 5,031,212.
What flights does 4CC52C operate?
Mode-S 4CC52C has broadcast 6 distinct callsigns, including ICE681, ICE14T, ICE12E, ICE98C, ICE216.